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Campo Dublin Core | Valor | Idioma |
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dc.contributor.author | Martins, Luiz Gustavo Pimenta | - |
dc.contributor.author | Silva, Diego L. | - |
dc.contributor.author | Smith, Jesse S. | - |
dc.contributor.author | Lu, Ang-Yu | - |
dc.contributor.author | Su, Cong | - |
dc.contributor.author | Hempel, Marek | - |
dc.contributor.author | Occhialini, Connor | - |
dc.contributor.author | Ji, Xiang | - |
dc.contributor.author | Pablo, Ricardo | - |
dc.contributor.author | Alencar, Rafael Silva | - |
dc.contributor.author | Souza, Alan Custodio dos Reis | - |
dc.contributor.author | Pinto, Alysson Alves | - |
dc.contributor.author | Oliveira, Alan Barros de | - |
dc.contributor.author | Batista, Ronaldo Junio Campos | - |
dc.contributor.author | Palacios, Tomas | - |
dc.contributor.author | Mazzoni, Mário Sérgio de Carvalho | - |
dc.contributor.author | Matos, Matheus Josué de Souza | - |
dc.contributor.author | Comin, Riccardo | - |
dc.contributor.author | Kong, Jing | - |
dc.contributor.author | Cançado, Luiz Gustavo de Oliveira Lopes | - |
dc.date.accessioned | 2022-03-08T19:28:47Z | - |
dc.date.available | 2022-03-08T19:28:47Z | - |
dc.date.issued | 2021 | pt_BR |
dc.identifier.citation | MARTINS, L. G. P. et al. Hard, transparent, sp3 -containing 2D phase formed from few-layer graphene under compression. Carbon, v. 173, p. 744-757, 2021. Disponível em: <https://www.sciencedirect.com/science/article/abs/pii/S0008622320311179>. Acesso em: 25 ago. 2021. | pt_BR |
dc.identifier.issn | 0008-6223 | - |
dc.identifier.uri | http://www.repositorio.ufop.br/jspui/handle/123456789/14645 | - |
dc.description.abstract | Despite several theoretically proposed two-dimensional (2D) diamond structures, experimental efforts to obtain such structures are in initial stage. Recent high-pressure experiments provided significant advancements in the field, however, expected properties of a 2D-like diamond such as sp3 content, transparency and hardness, have not been observed together in a compressed graphene system. Here, we compress few-layer graphene samples on SiO2/Si substrate in water and provide experimental evidence for the formation of a quenchable hard, transparent, sp3 -containing 2D phase. Our Raman spectroscopy data indicates phase transition and a surprisingly similar critical pressure for two-, five-layer graphene and graphite in the 4e6 GPa range, as evidenced by changes in several Raman features, combined with a lack of evidence of significant pressure gradients or local non-hydrostatic stress components of the pressure medium up to z 8 GPa. The new phase is transparent and hard, as evidenced from indentation marks on the SiO2 substrate, a material considerably harder than graphene systems. Furthermore, we report the lowest critical pressure (z 4 GPa) in graphite, which we attribute to the role of water in facilitating the phase transition. Theoretical calculations and experimental data indicate a novel, surfaceto-bulk phase transition mechanism that gives hint of diamondene formation. | pt_BR |
dc.language.iso | en_US | pt_BR |
dc.rights | restrito | pt_BR |
dc.title | Hard, transparent, sp3 -containing 2D phase formed from few-layer graphene under compression. | pt_BR |
dc.type | Artigo publicado em periodico | pt_BR |
dc.identifier.uri2 | https://www.sciencedirect.com/science/article/abs/pii/S0008622320311179 | pt_BR |
dc.identifier.doi | https://doi.org/10.1016/j.carbon.2020.11.038 | pt_BR |
Aparece nas coleções: | DEFIS - Artigos publicados em periódicos |
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ARTIGO_HardTransparentSp.pdf Restricted Access | 3,01 MB | Adobe PDF | Visualizar/Abrir |
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